JSON Web Token

RFC 7797 - JSON Web Signature (JWS) Unencoded Payload Option https://tools.ietf.org/html/rfc7797

RFC 7519 - JSON Web Token (JWT) https://tools.ietf.org/html/rfc7519

Abstract

   JSON Web Token (JWT) is a compact, URL-safe means of representing
   claims to be transferred between two parties.  The claims in a JWT
   are encoded as a JSON object that is used as the payload of a JSON
   Web Signature (JWS) structure or as the plaintext of a JSON Web
   Encryption (JWE) structure, enabling the claims to be digitally
   signed or integrity protected with a Message Authentication Code
   (MAC) and/or encrypted.

JSON Web Signature (JWS) Unencoded Payload Option

Abstract

   JSON Web Signature (JWS) represents the payload of a JWS as a
   base64url-encoded value and uses this value in the JWS Signature
   computation.  While this enables arbitrary payloads to be integrity
   protected, some have described use cases in which the base64url
   encoding is unnecessary and/or an impediment to adoption, especially
   when the payload is large and/or detached.  This specification
   defines a means of accommodating these use cases by defining an
   option to change the JWS Signing Input computation to not base64url-
   encode the payload.  This option is intended to broaden the set of
   use cases for which the use of JWS is a good fit.

   This specification updates RFC 7519 by stating that JSON Web Tokens
   (JWTs) MUST NOT use the unencoded payload option defined by this
   specification.

RFC 7519 - JSON Web Token (JWT) https://tools.ietf.org/html/rfc7519